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^^ Your welcome, I'm glad they are getting used and helping you and others. For those wanting to use FLAC I use Media Monkey which I believe has a free version, but if not I am sure there are some decent free products available to help use flac.
As for which file to use, I am actually going to try the 2nd file with my new MTPC when they arrive as I am hoping it may tame the bass a bit versus the brown centric file, while still helping to draw out the midrange, as I do like a slightly forward midrange. But if I don't like the results I'll be switching back to the first burnin file I made as I did like the results of it for the most part.
dweaver, I had great success utilizing your files, but I went even further. I quadrupled up the Pink and White noise before and after the Brown noise file and I added a frequency sweep file and a drum file. My playlist looked something like this: P, W, P, W, P, W, P, W, B, P, W, P, W, P, W, P, W, full frequency sweep, heavy drum file, 1 hr silence file. After I unboxed my Copper's, I listened to my music for 4-5 hours, then I set up the playlist, looped it, set the volume to just above normal listening levels and let it run over night (8 hrs). The next morning I took them off and let them rest while I was at work. The following night I did the same thing.
Judging only from my initial listen out of the box, I think my break in evened out an already well balanced IEM. The highs are nice and crisp, but not sibilant. The mids are balanced nicely, not in your face or recessed and the biggest change occured in the low end. The bass is still punchy and full bodied, but it's not boomy or sloppy in any way. It can still pound for Trance and house music or blend in nicely with Jazz. It's not the focal point, it's where it should be, ready and waiting. If anything, I think my choice of file order resulted in maintaining the highs and mids more than bringing them forward. I don't find myself focusing on anything but the music playing through them now, where out of the box, I was critically listening. My Copper's are the most enjoyable IEM I've heard to date. They do every genre well for me. I don't find myself wanting more of any range. My IE8's needed EQ'ing to shine, my ER-4P's needed more bass, The IE7's just needed a little more of everything. My Copper's sound just right to me and I couldn't be happier.